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# Forum: Psychology Statistics

Psychological statistics, quantitative psychology. Statistics in social sciences. Experimental design, data analysis.

1. ### Sticky: Please Read This Before Posting

Please provide us with some basic information before we can give useful advice: 1. purpose of the study / research question / hypotheses, if...

• Replies: 0
• Views: 31,387
11-10-2005, 12:21 AM
1. ### Test to measure interaction effects among factors on a dependent variable

Hi all, I am a new Statistics learning (1st year graduate student) and I would appreciate your opinion on my research design to answer a specific...

• Replies: 1
• Views: 91
Today, 08:47 AM
2. ### Book for HLM

Hi everyone. Can anyone recommend a good book for studying HLM? Thanks for any help!

• Replies: 5
• Views: 145
Yesterday, 06:18 AM
3. ### Can I calculate Cohen's d on z scores?

Hi everyone, I am trying to calculate the size of the difference between the means of two groups in a psychological test. However, I am not using...

• Replies: 0
• Views: 142
css
10-15-2017, 08:16 AM
4. ### p value of .051

Hello everyone, If I have a p-value of .051 is considered over .05? Should I do not reject the null hypothesis? Thanks

• Replies: 5
• Views: 226
10-10-2017, 05:13 PM
5. ### Which test to use for binary variables and concerns about multiple comparisons

Hi all, I am working on a research project attempting to compare two groups of subjects' (call them A and B) brains based on MRI results. Let's...

• Replies: 3
• Views: 335
09-28-2017, 09:14 PM
6. ### Discriminant Validity using Correlation Matrix

Hi.. I need help regarding establishing discriminant validity of an adapted scale using the correlation matrix. Original scale had 36 items. I...

• Replies: 0
• Views: 166
09-26-2017, 11:29 PM
7. ### measuring same variables for unrelated topics within subjects

Hello everyone, Purpose of the study: I want to find out how the perceived competence and warmth of an activist group relates to whether someone...

• Replies: 2
• Views: 234
eku
09-25-2017, 10:42 AM
8. ### Regression with change scores

I handled it. you can close to topic.

• Replies: 0
• Views: 262
09-17-2017, 05:31 AM
9. ### Decision Making Attributes Statistical Significance Tests

Hi All So I am looking for some advice regarding the best test to use for the scenario below (the data itself is not normally distributed and the...

• Replies: 1
• Views: 485
09-04-2017, 05:58 AM
10. ### A problem with covariates

Hello everyone. I have a problem with covariates. I have a database with a mixed design, with a manipulation as a within-subject variable. Each...

• Replies: 0
• Views: 352
08-25-2017, 04:23 AM
11. ### Bradley-Terry paired comparisons ranking with SPSS

Hey everyone! I apologize if this is a repeated topic; I ran the search function in different browsers, but the function did not work. I would...

• Replies: 0
• Views: 264
08-24-2017, 07:16 AM
12. ### Comparing the academic performance between two classes

Compare the academic performance between two classes Dear all, I kindly need your help. Here is my background. I am a secondary school teacher....

• Replies: 6
• Views: 444
lcy
08-18-2017, 10:51 PM
13. ### Analysis, Thesis on Mindfulness

Hey guys, I am currently struggling with identifying the appropriate statistical method for my bachelor thesis. Participants are measured over...

• Replies: 3
• Views: 305
08-18-2017, 03:24 AM
14. ### correlation of age at onset of "sexual abuse" of minors and impairment

Hello, I have a question about the following things: Some studies define sexual abuse of minors as unwanted sexual contacts before the age of...

• Replies: 1
• Views: 180
08-17-2017, 11:30 PM
15. ### Reliability Analysis for Ability Test (Signal Detection)

Good day all, I have been tasked with working out the alpha for an ability test which measures only two factors: Median Reaction Time (in ms) and...

• Replies: 0
• Views: 264
08-02-2017, 01:42 AM
16. ### Graphing nonlinear results

Not sure as newbie where to best post this question. A graph in a psychology article has a graph for survey scores. Would like to figure out formula...

• Replies: 7
• Views: 527
07-22-2017, 05:59 PM
17. ### Filling in Anova Tables

Hello, Can anyone provide a step by step example of how to go about filling in the missing areas in this Anova output table for my homework...

• Replies: 0
• Views: 343
07-20-2017, 08:15 PM
18. ### Which test in SPSS should I use?

I'm trying to work out whether there are relationships between two IVs and one DV (I'm not interested in correlations between IVs, though they may...

• Replies: 0
• Views: 694
07-18-2017, 08:51 AM
19. ### blank spaces on SPSS output

Hi, I am running a 2x3 repeated measures ANOVA. My IVs are both categorical variables and my DV is a continuous variable - score (out of 200). ...

• Replies: 0
• Views: 458
07-13-2017, 05:45 AM
20. ### Too many variables - Multivariate analysis of covariance - New to this

Hi there. This will be my first post on the forums, I'm a Psychology student currently conducting research at an internship. We treat IDD...

• Replies: 2
• Views: 473
07-11-2017, 05:19 PM
21. ### Power analysis for 3-way interaction with 1 between-, 2 within-subjects factors

Hi all, I am trying to use G*Power 4 to compute the sample size that I will need to detect a 3-way interaction (2 x 2 x 2) in a mixed-effect ANOVA...

• Replies: 0
• Views: 346
07-10-2017, 04:29 PM
22. ### Multiple Scales within a Moderator

Dear all, I am conducting a moderated multiple regression analysis for my research. One of my moderators comprises 5 different scales (with their...

• Replies: 0
• Views: 326
07-10-2017, 01:59 AM
23. ### Mixed methods ANCOVA

Hey, I wondered if anyone could help me out. I am trying to conduct an ANCOVA for my masters project and am confused on how to enter the data. So...

• Replies: 0
• Views: 252
07-09-2017, 05:17 PM
24. ### Confirmed model doesn't fit with different population. Should I return to EFA or not?

I am trying to confirm the model for a 16-item measure. It has been confirmed for a homogeneous group, however, I want to determine if the model fits...

• Replies: 1
• Views: 312
06-29-2017, 08:39 PM
25. ### Question about 3X3 repeated measures ANOVA and simple effects

First time posting here. I have conducted a transcranial magnetic stimulation study and am analyzing the results as a 3x3 repeated measures ANOVA....

• Replies: 1
• Views: 439
06-24-2017, 08:59 PM
26. ### Let me know a better analysis method?

I have two IVs; "collection method" (online and classroom) and "culture" (A and B), one continuous variable ("Age") and 8 DVs (well-being variables...

• Replies: 13
• Views: 1,070
06-24-2017, 12:55 AM
27. ### Question regarding Repeated measures 3-way ANOVA for thesis

Dear Readers, I am new to this forum and I have a question regarding my output/researchdata. I am currently analyzing my hypothesis with respect...

• Replies: 1
• Views: 298
06-23-2017, 04:36 PM
28. ### Need help with performing the correct analysis?

I have: Two categorical Dependent Variables: Treatment(A, B), and Genotype (WT, HET). Two continuous Independent Variables: Latency (seconds),...

• Replies: 1
• Views: 507
06-14-2017, 01:16 PM
29. ### ANOVA und Cohens d`?

Hi there! So, i did a psychological study where i tried to manipulate flow. In that study every subject had to play a racing game 6 times and...

• Replies: 1
• Views: 419
06-14-2017, 09:45 AM
30. ### Comparing a test vs gold standard in 4x4 matrix

Hello everybody, I am trying to figure out how to measure the specificity and recall of a test I'm working in. The test is aimed to classify items...

• Replies: 0
• Views: 474
06-13-2017, 04:24 AM
31. ### Simple survey analysis questions

Hello all, I've been asked to assist with the statistical analysis of some survey data, and I'm a bit of a novice with this type of analysis, so...

• Replies: 0
• Views: 1,587
06-11-2017, 03:38 PM
32. ### Sampling in Randomized Evaluation

I am designing an experiment in which the treatment is administered through information priming. I plan to conduct the experiment in a large city...

• Replies: 0
• Views: 380
06-11-2017, 03:19 PM
33. ### Software to perform conjoint analysis

What software supports conjoint analysis?

• Replies: 0
• Views: 482
06-11-2017, 05:28 AM
34. ### ANCOVA with dichotomous dependent variable - How?

Hi everyone! I am a new subscriber with a little talent for statistics and I study developmental psychology :) I need to perform and ANCOVA on a...

• Replies: 3
• Views: 569
06-09-2017, 06:28 AM

Hi everybody, I am a master student doing my first quantitative analysis. I want to analyze if there is a relationship between a gender quota...

• Replies: 1
• Views: 973
06-07-2017, 05:07 AM
36. ### Is there any justification to treat a sum of ordinal scores as a ratio score?

More than once, I noticed that researchers sum ordinal scores of e.g. items of a psychometric test to gain a total score. This score is e.g....

• Replies: 1
• Views: 653
06-04-2017, 05:05 PM
37. ### Multiple regression question

Hello everyone, I cannotfind the solution to following question and dont really know how to exclude any alternative. We regress an outcome...

• Replies: 9
• Views: 838
06-02-2017, 10:39 AM
38. ### Help Please

A local United Way and a group of community agencies in a large urban area have decided that making sure young children are ready to enter the school...

• Replies: 2
• Views: 1,862
06-02-2017, 10:39 AM
39. ### Correcting for repeated testing with 4 mediation analyses?

Hi guys, First time poster here, sorry if I post this at the wrong spot or something like that. For my thesis if have the following 4...

• Replies: 1
• Views: 821
06-02-2017, 02:32 AM
40. ### Testing differences between groups over time

Hello, I am writing a research proposal that looks at a change in scores over time between three groups. Here is the basic set-up: Three...

• Replies: 1
• Views: 1,053
06-02-2017, 02:19 AM
41. ### iPod Track Listening & Biological Samples— Within-Subjects Test/Regression?

I am analyzing data in which participants listened to iPods and provided biological samples on the same days. The iPod Listening Intervention was 1...

• Replies: 1
• Views: 690
06-02-2017, 02:07 AM
42. ### One way ANCOVA - Data failing assumption of linearity

Hello I'm working on my Msc in Psychology thesis, and I've chosen to explore if there are group differences between Internal vs External...

• Replies: 1
• Views: 984
06-02-2017, 01:56 AM
43. ### Paired sample t test vs Wilcoxon signed ranks test

As part of assessment, we are using a five-question multiple choice pretest and posttest. We have been using the Wilcoxon signed ranks test to...

• Replies: 1
• Views: 864
06-02-2017, 01:52 AM
44. ### Justifying use of hierarchical multiple linear regression (MHLR)

Hi, My research question is looking at the predictors of the transfer of training. I have performed a series of separate hierarchical...

• Replies: 0
• Views: 497
05-31-2017, 10:58 AM
45. ### Is it possible or meaningful to run an ANOVA on only two groups?

Hi, we have been given a bunch of homework questions and i can't seem to work this one out. "Is it possible or meaningful to run an ANOVA on...

• Replies: 3
• Views: 703
05-30-2017, 09:52 PM
46. ### Forced choice test with six options - analysis

Dear all, I had a profile here before, but I cannot access it anymore since I registered it on an e-mail I don't have anymore (since I changed...

• Replies: 0
• Views: 589
05-30-2017, 04:41 AM
47. ### Planned a MANOVA, but data may suggest a MANCOVA

Hi there! Thanks for taking a minute to help me. I'm in the final days of my PhD and running analyses for my final study. But the longer I look at...

• Replies: 0
• Views: 703
05-28-2017, 08:30 AM
48. ### Help - analyzing monthly data for nursing home residents

Hi there - I am trying to analyze data from approximately 40 nursing home residents. We collected both Cohen-Mansfield and Cornell Brown monthly,...

• Replies: 6
• Views: 1,114
05-24-2017, 03:41 PM
49. ### Choosing the righ test

Hello, I'm a psychology student and I'm really, really bad at SPSS so I need some help. If this is not the right place to post this, please...

• Replies: 7
• Views: 1,539
05-16-2017, 11:05 PM
50. ### Correction factor for density calculation of different network sizes

Hi everyone, For my PhD research I am comparing the density of social networks of different sizes, and density is simply calculated in a linear...

• Replies: 0
• Views: 757
05-10-2017, 03:54 PM
51. ### Help with Ordinal Data

Hi all! I have some data collected for an intervention study where we had participants from two groups (anxious vs non-anxious) undergo one of two...

• Replies: 0
• Views: 858
05-08-2017, 02:30 PM
52. ### Test Your Quantitatie Research Design Knowledge

CAN SOMEONE PLEASE HELP WITH THE FOLLOWING QUESTIONS??? Karsh (1983) designed an experiment on the relationship between early handling and...

• Replies: 5
• Views: 1,239
05-08-2017, 08:25 AM
53. ### All this data and IDK what to do with it.

I need assistance. I am an undergrad social work major in a stats class. I have access to excel and SPSS. My research question: Does the lack of...

• Replies: 0
• Views: 863
05-08-2017, 02:02 AM
54. ### What analysis do I run?

Hi All, I am conducting a study within the ASD population that is looking at IQ, executive function and adaptive skills for which of them I am...

• Replies: 11
• Views: 1,352
05-08-2017, 01:57 AM

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